System and Method for Optical Communication Using Polarization Filtering

a technology of optical communication and filtering, applied in the field of system and method of optical communication using polarization filtering, can solve the problem of reducing the effectiveness of these devices as communication components, and achieve the effect of improving the effectiveness of these devices

Inactive Publication Date: 2011-06-30
ALPHION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The implementation of a PFD significantly enhances the extinction ratio from 7.6 dB to 13.6 dB, thereby improving the bit error rate performance and overall effectiveness of the SOA-MZI communication circuit.

Problems solved by technology

However, low extinction ratios at the output of SOA-MZIs tend to diminish the effectiveness of these devices as communication components.

Method used

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  • System and Method for Optical Communication Using Polarization Filtering
  • System and Method for Optical Communication Using Polarization Filtering
  • System and Method for Optical Communication Using Polarization Filtering

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Embodiment Construction

[0012]In the following description, for purposes of explanation, specific numbers, materials and configurations are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one having ordinary skill in the art that the invention may be practiced without these specific details. In some instances, well-known features may be omitted or simplified so as not to obscure the present invention. Furthermore, reference in the specification to phrases such as “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of phrases such as “in one embodiment” or “in an embodiment” in various places in the specification do not necessarily all refer to the same embodiment.

[0013]In this disclosure, we propose a method of using a polarization-filtering device (PFD) to improve the performance of an SOA...

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Abstract

An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 12 / 043,496, filed on Mar. 6, 2008, entitled “System And Method For Optical Communication Using Polarization Filtering,” which claims the benefit of U.S. Provisional Patent Application Ser. No. 60 / 893,187, filed Mar. 6, 2007, entitled “SOA-MZI performance With Polarization Filtering Device”, the entire disclosures of which applications are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]Semiconductor Optical Amplifier (SOA)-based Mach-Zehnder interferometers (SOA-MZI) are widely used in fiber-optic communication systems for photonic re-amplification, reshaping (P2R), retiming (P3R), Optical Time-Division Demultiplexing (OTDM), and optical logic gates.[0003]However, low extinction ratios at the output of SOA-MZIs tend to diminish the effectiveness of these devices as communication components. Accordingly, there is a need in the art for an improved SOA-M...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H01S5/00
CPCG02F1/3519
InventorWANG, HONGSHENG
OwnerALPHION